Detections
Analytics
Cisco NX-OS Software NX-API RCE (cisco-sa-napi-rce-r2shwu2j)
critical Nessus Plugin ID 364501
Synopsis
The remote device is missing a vendor-supplied security patchDescription
According to its self-reported version, Cisco NX-OS Software is affected by a vulnerability.- A heap-based buffer overflow condition exists in the NX-API feature due to insufficient input validation of data sent to the NX-API. An unauthenticated, remote attacker can exploit this, by sending a specially crafted HTTP request, to execute arbitrary code with root privileges or cause a denial of service condition. (CVE-2026-76471)
Please see the included Cisco BID and Cisco Security Advisory for more information.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCwu46199.See Also
Plugin Details
Severity: Critical
ID: 364501
File Name: cisco-sa-napi-rce-r2shwu2j.nasl
Version: 1.1
Type: Combined
Family: CISCO
Published: 10/9/2026
Updated: 10/9/2026
Configuration: Enable paranoid mode
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.6
Percentile: 98.25
CVSS v2
Risk Factor: Critical
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2026-76471
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability Information
CPE: cpe:/o:cisco:nx-os
Required KB Items: Settings/ParanoidReport, Host/Cisco/NX-OS/Version, Host/Cisco/NX-OS/Model, Host/Cisco/NX-OS/Device
Patch Publication Date: 10/7/2026
Vulnerability Publication Date: 10/7/2026
Reference Information
CVE: CVE-2026-76471